Over 300 million years ago, Earth experienced powerful bursts of carbon dioxide from natural sources—like massive volcanic eruptions—that triggered dramatic drops in ocean oxygen levels. These ancient ...

If you’re wondering which Cozumel reefs are worth your dive or snorkel time, you’re in the right place. I lived in Cozumel for almost two years and have been diving for over 15. I’ve seen the good, ...

An insider guide to one of Italy’s most-loved regions, its rustic charm, time-capsuled atmosphere and abundance of great food ...